You have already signed up. If you need any more information regarding CBT, please have a look at my FAQ I have covered everything.
You needed to be registered by the end of today which is what Ahri said. Anyone who has created an account will already have access to CBT and only needs to wait for the CBT client as mentioned by Shinnen.
Again I would just like to point out if anyone wants to come and join our Discord server, we're all going to be playing the CBT and everyone of us is friendly and polite. If you would like your own League or Bands channel within our Server you're more than welcome to request one. Discord Invitation
In order to ensure the quality of our launch, we will have to postpone Closed Beta Test until February 11, 2016, at 6 PM PST. http://forums.playredfox.com/index.php?threads/closed-beta-delayed-february-11.321/